#include<iostream>
using namespace std;
typedef char* LNI;
string s;
extern "C"{
    LNI losu_io_in(LNI str){
        char st;
        cout<<str;
        cin>>s;
        scanf("%c",&st);
        return (char*)s.c_str();
    }
    LNI losu_io_inline(LNI str){
        cout<<str;
        getline(cin,s);
        return (char*)s.c_str();
    }
}